Extron electronics SMP 351 User Manual page 207

Push streaming — A streaming method where the encoder sends content out to one
(unicast) or more (multicast) decoders using one of the transport protocols. Content
streaming is initiated at the encoder.
Quality of Service (QoS) — The grade of performance, such as transmission rates and
error rates, of a communications channel or system. QoS provides a level of predictability
and control beyond the best-effort delivery that the router provides by default (best-
effort service provides packet transmission with no assurance of reliability, delay, jitter, or
throughput).
Real-time Streaming Protocol (RTSP) — A network control protocol designed for use in
audio visual and communications systems to control streaming media.
Real-time Transport Protocol (RTP) — An Internet Engineering Task Force (IETF)
standard for streaming real-time multimedia over IP in packets.
Router — A network device that forwards packets from one network to another.
Secure File Transfer Protocol (SFTP) — Similar to FTP, this protocol adds encryption and
requires credentials for file transfers.
Session Announcement Protocol (SAP) — Used by source devices (encoders or servers)
in conjunction with SDP to publicize the availability of a stream to decoders and players.
The SAP periodically broadcasts session description information on an industry standard
multicast address and port. When received by remote clients, these announcements can be
used to facilitate the viewing of streams, eliminating the need for user configuration.
Session Description Protocol (SDP) — This protocol is used to describe streaming
media initialization parameters. It covers session announcement, session invitation, media
type and format, and other forms of multimedia session initiation (as defined in RFC 2327).
SDP does not deliver media itself. It simply details the stream parameters and how the
stream will be started.
Secure Shell (SSH) — A network protocol that creates a secure channel used for secure
communication between two computers on a network. SSH is typically used for data
communication, remote shell (login) services, or command execution.
Secure Sockets Layer (SSL) — A protocol used by Web servers and Web browsers that
creates a uniquely encrypted channel for private communications over the public Internet.
Simple Instruction Set (SIS) — A set of commands developed by Extron that allows for
RS-232, USB, and TCP / IP control of certain Extron products. A command is sent from
the control device to the product (using a minimal number of characters) and a response is
received from the product and shown on the display of the control device.
Simple Network Management Protocol (SNMP) — An application-layer protocol that
facilitates the exchange of management information between network devices. This protocol
collects (and configures) information from network devices (such as servers, hubs, switches,
and routers) on an Internet Protocol (IP) network.
Static IP address — An IP address specifically (instead of dynamically [see "DHCP"])
assigned to a device or system in a network configuration. This type of address requires
manual configuration of the network device or system and can only be changed manually or
by enabling DHCP.
Stop bits — The bit or bits transmitted that signal the end of a character. Typically set to 1.
Streaming Media Player (SMP) Web browser plugin — The Extron SMP Web browser
plugin (V1.0) provides the best streaming features to display from Extron streaming media
devices.
Streaming media (stream) — Multimedia that is constantly received by (and normally
presented to) an end-user while being delivered by a streaming provider. Internet television is
a commonly streamed medium.
SMP 351 • Reference Information 201